Suffix

Webster's Dictionary of the English Language

·noun A subscript mark, number, or letter. ·see Subscript, ·adj.

II. Suffix ·vt To add or annex to the end, as a letter or syllable to a word; to Append.

III. Suffix ·noun A letter, letters, syllable, or syllables added or appended to the end of a word or a root to modify the meaning; a postfix.